万有引力与航天试题与答案（Gravitation and space questions and answers）.docVIP

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万有引力与航天试题与答案（Gravitation and space questions and answers）.doc

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万有引力与航天试题与答案（Gravitation and space questions and answers）

万有引力与航天试题与答案（Gravitation and space questions and answers） Gravitation and space questions and answers. Txt7 warmth is a shower of spring rain; Warmth is the smile on the face; Warmth is a response; Warmth is meticulous cooperation. The respect is a wisp of spring breeze, one hong qingquan, one to give a person the warm comfort pill, one agent to urge the strong heart of the article by wangfj1982 contribution Doc documents may have a poor browsing experience at the WAP end. It is recommended that you choose TXT, or download the source file to the native view. Gravitation and spaceflight: gravitation and spaceflight 1. The expression of the law of universal gravitation is F = G Whats the right thing to say under m1m 2 is (r2) ) A. formula for gravitational constant G, it is measured by experiment, instead of artificial regulation formula for gravitational constant, it is measured by experiment, b. when r tend to zero, gravity tends to infinity When tend to zero, c. m1 and m2 are always equal, and by the gravity of the size in the opposite direction, is a pair of gravity are always equal to the size of the balance, in the opposite direction, d. m1 and m2 by gravity is always equal, and has nothing to do with m1 and m2 are equal By gravity is always equal to the size of the, 2. Due to high altitude in the operation of the satellite in thin air resistance, radius of the orbit around the earth will gradually reduce, due to high altitude in the operation of the satellite in thin air resistance, radius of the orbit around the earth will gradually reduce, due to high altitude in the operation of the thin air resistance In the process of slowly varying radius, the movement of the satellite can be approximate as uniform circular motion. In the process of slow radius change, the motion of the satellite can also be approximated as uniform circular motion. When it is in larger orbit Appears as A uniform circular motion radius r1 on line speed for v1, cycle for T1, later on smalle